# HF-20230515

The May 2023 protocol upgrade is to be comprised of the following CHIPs:

1. [CHIP 2021-01 Allow Transactions to be smaller in size](https://gitlab.com/bitcoin.cash/chips/-/blob/master/CHIP-2021-01-Restrict%20Transaction%20Versions.md)
2. [CHIP 2021-01 Restrict Transaction Version](https://gitlab.com/bitcoin.cash/chips/-/blob/master/CHIP-2021-01-Restrict%20Transaction%20Versions.md)
3. [CHIP-2022-02-CashTokens: Token Primitives for Bitcoin Cash](https://github.com/bitjson/cashtokens)
4. [CHIP-2022-05 Pay-to-Script-Hash-32 (P2SH32) for Bitcoin Cash](https://gitlab.com/0353F40E/p2sh32/-/tree/main)